DFRobot
Multi-function Environmental Module - CCS811+BME280
Build up a simple environmental monitor station with this multi-function environment sensor! Based on the combination of CCS811+BME280 chip, this module f...
Build up a simple environmental monitor station with this multi-function environment sensor! Based on the combination of CCS811+BME280 chip, this module features high accuracy, I2C interface, and fast Measurement. The BME280 can provide temperature and humidity compensation for CCS811 to improve the whole accuracy to a certain extent. It can be used to detect temperature, humidity, barometric pressure, altitude, TVOC, and eCO2.
CCS811 air quality sensor uses AMS's unique micro-hot plate technology. Compared with conventional gas sensors, it has lower power consumption, shorter preheating time, and smaller size. The internally integrated ADC and MCU allow it to collect and process data, and return via I2C.
BME280 is an environmental sensor that combines temperature sensor, humidity sensor, and barometer in one board. It has high precision, multiple functions, small size, etc. The sensor offers ±0.5℃ temperature error and ±2%RH humidity error. It provides very stable performance within the detection temperature range. Besides, the offset temperature coefficient is ±1.5 Pa/K, equiv. to ±12.6 cm at 1 °C temperature change.
NOTE: The chip has stretched the clock in I2C. So, it may be not compatible with some controllers, such as Raspberry Pi.
FEATURES
- Short preheat time, low power consumption
- Fast response
- Highly integrated
- Support for measuring multiple environmental data
APPLICATIONS
- Environment Monitor
- Air Purifiers
- Smart Home
- Ventilation System
- Weather Forecast
SPECIFICATION
- Operating Voltage: 3.3V~5.5 V
- Working Current: <20mA
- Dimension: 20*28mm/0.79*1.10”
CCS811 Parameter:
- Preheat Time: <15s
- I2C Address: 0x5A(in default)/0X5B
- Operating Temperature Range: -40℃~85℃
- Operating Humidity Range: 10%RH~95%RH
- eCO2 Measuring Range: 400ppm~8000ppm
- TVOC Measuring Range: 0ppb~1100ppb
BME280 Parameter:
- I2CAddress：0x76(in default)/0X77
- Operating Temperature: -40℃~85℃
- Temperature Measuring Range: -40℃~+85℃, resolution of 0.1℃, deviation of ±0.5℃
- Humidity Measuring Range: 0~100%RH, resolution of 0.1%RH, deviation of ±2%RH
- Pressure Measuring Range: 300~1100hPa
DOCUMENTS
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
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